Helen draws a random circle. She then measures its diameter and circumference.

She gets a circumference, C, of 405 mm correct to 3 significant figures. She gets a diameter, d, of 130 mm correct to 2 significant figures.

Helen wants to find the value of π using the formula π=C/d

Calculate the lower bound and upper bound for Helen's value of π. Give your answers correct to 3 decimal places.

Will mark the brainliest answer

true

step-by-step explanation:

the answer is c just got it on ed

step-by-step explanation:

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.